S5-115F Manual Technical Description
2.2.3 Central Processing Unit Description
The following table shows the most important features of the CPU 942F.
Table 2-1. Execution Times of the CPU 942F in µs (rounded off)
Operation Execution Time in µs
Boolean logic operations
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1.6
1.6
81 to 124
66 to 161
64 to 72
129
92 to 155
1.6
152 to 154
1330
1.6
Load/Transfer operations
(I, Q, F, T, C)
Comparison/ Arithmetic operations
Jump/Conversion operations
Timer/Counter operations
Block call operations
Load/Transfer operations (DW)
Substitution operations (formal operands)*
Load/Transfer operations
(LIR, TIR, TNB)**
Bit test operations
Load/Transfer operations
I/O modules
* Plus execution time of the substituted operation!
** Plus transmission time!
EWA 4NEB 811 6148-02
2-9
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